Improvement in metallic cartridges



I. M. MILBANK.

Improvement in Cartridges for Fire-arms.

N0. 123,351. I Patented-Feb. 6,1872.

NITED $TATES Prion.

IMPROVEMENT IN METALLIC CARTRIDGES.'

Specificatiomforming part of Letters Patent No. 123,351, dated February6, 1872 antedated January 22, 1872.

.To all whom it may concern:

. strengthens the case at-the angle between the fiat end and thecylindrical sides, and risk of the ease breaking at this point islessened.

: Furthermore, I make use or an interior base or disk, also soldered toplace, in combination with the said exterior ring, so as to strengthenthe entire rear end of the cartridge-case, when the same is made fromlight or weak sheet metal. The ball that I employ is inclosed in awooden case, the said case at its forward end fitting the taperingforward end of the ball, so that, as the ball is started, it

acts to spread the front end of the wooden case, to cause the same tofit the inside of the barrel. The wooden cylinder is to be saturated'with lubricating material, such as tallow and graphite, and a groovearound this case also contains lubricating material, and 1s introduc-edinto the sheet-metal cartridge-case.

I11 the drawing, Figure 1 is a section of the cartridge. Fig. 2 is asection of the ring sep ar'ately; and Fi is a detached section of thewooden case for the ball.

The sheet-metal cartridge'ca-se a is made with the flat rear end :2. andaround the same ist-he ring-b, soldered or brazed firmly to the ease toform a flange to the same that will take the place of the ordinaryflange made of the metal of the ease. The interior base 0 is to beintroduced and soldered to its place substanv tinlly the same as in mypatent of February 11), 1567, No. 62,283. This is especially usefulwhere the cartridge-case is of thin sheet metal. The sheet metal of theend of the case is recessed for receiving the primer 0, shown separatelyin Fig. 4, and this primer is made as a shallow l'ulminating-ca-p, andwithin this is an anvil made by a small split ring, 3, and this ringcauses the fulminate to explode whenthe cap is struck by the hammer. Thesplit ring is easily made out of sheet metal or wire, and can'beintroduced and. will remain in the cap in consequence of the expansionor spring of the ring. The wooden case 7" that receives the metal ball gis made with a cavity therein for receiving said ball, and the forwardend of this cavity is made to fit the tape-ring end of the ball, so thatthe ball supports the wooden case, especially at the forward end,against the compressing action of the barrel as the ball and its caseare driven into the ritlegrooves; thereby the cylinder fits the barreltightly, guides the ball accurately, and cleans said barrel. The woodencylinder is saturated with lubricating materialsuch as tallow andgraphite, preferably-by immersing such cylinders in melted lubricant;and a groove, 4., around the same contains suitable material to aid inlubricating the barrel and also in making the cylindrical case f tightwith the metal case a, as said groove should be pressed below the. edgeof said case a, as seen in Fig. 1. The wooden case a is to be scoredwith two'or more incisions, to facilitate the separation of the casefrom the bullet after they leave the barrel.

I claim as my invention 1. The cartridge-case a with its closed base 2made of one piece of sheet metal, in combination with the metallic ringI) soldered around said case at the angle between the sides and end,substantially as and for the purposes set forth.

2. The cartridge-case a with its closed base 2 made of one piece ofsheet-metal, in combination with the metallic ring D and the disk 0,substantially as and for the purposes set forth.

3. The split ring introduced in the primer to form an anvil, as and forthe purposes set forth.

4. A wooden case containing the ball and inserted into the sheet-metalcartridgecase, as set forth, so that the groove in said case containin gthe lubricating material shall pass below the end of said sheet-metalcase, as set forth.

Signed by me this 27th day of April, I871.

I. M. MILBANK.

Witnesses:

G120 D. ,WALKER, GEo. T. PINCKNEY.

